Scraper



C. LE BLEU July 9, 1940.

SCRAPER Filed Feb. 10. 1937 5 Sheets-Sheet 1 INVENTOR.

'ATTORNEYS July 9, 0.

C. LE BLEU SCRAPER Filed Feb. l0, 1937 5 Sheets-Sheet 2 v m K R E 2 2%www QB IN VEN TOR ATTORNEY July 9, 1940. c. L E BLEU SCRAPER Filed Feb.lO, 1957 5 Sheets-Sheet 5 july 9 w40- c. LE BLEU 2,207,0l6

SCRAPER Filed Feb. l0, 1937 5 Sheets-Sheet 4 FIG. S

/N VENTO/C m. 1/wf@ zi @c/J A TTU/(NE Y C. LE BLEU July 9, 1940.

S CRAPER Filed Feb. 10, 1937 5 Sheets-Sheet 5 Nm wm hk n Nv A TTORNEYPatented July 9, 1940 UNITED STATES PATENTv OFFICE sonnen charles LeBleu, nos Angeles, onu. Application February 1o, 1937, .serial No.125,036 13 claims. (ci. 379-126) This invention relates to scrapers forexcavatv ing, transporting, leveling and grading.

This invention is an improvement upon the invention disclosed in mypending application Serial No. 111,884, filed November 20, 1936, inwhich I disclose; a scraper having a main carrier, an auxiliary carrier,and means operably associating said carriers whereby when means areapplied to the main carrier to discharge same the main carrier will actupon the auxiliary carrier, through associating mechanism, to controlthe discharging of the auxiliary carrier.

An object of this present invention is the provision, in a scraperhaving a main carrier and an auxiliary carrier, of novel means appliedto the carriers to control the discharging of same successively.

Another object of this invention is the provision, in a scraper having amain carrier and an auxiliary carrier, of an independent control meansfor each carrier and means for actuating said controls simultaneouslyfor controlling the discharging of said carriers successively.

Another object is the provision, in a scraper having a main carrier andan auxiliary carrier,

' of an independent control means applied to each carrier, and a commonmeans for actuating said controls simultaneously to control thedischarging of said carriers successively.

Still another object of this invention is the provision, in a scraperhaving a main carrier and an auxiliary carrier, of a control cable foreach carrier and a common winding means for winding up said cablessimultaneously.

Another object is the provision of a scraper including a frame includingside walls, a main bottom tlltably disposed between the side walls and ascraper rigid with said main bottom for scraping up materials, saidbottom and said side walls combining to form an earth carrier adapted toreceive scraped up materials.

Still other objects, features and advantages of this invention will beapparent .to those skilled in the art upon detailed perusal of theaccompanying drawings and the following specifications wherein Iexemplify and describe my invention, but it is to be understood that myinvention is susceptible to modication in the combination, correlationand construction of parts, members and features, and has a Wideapplication in the design and construction of Scrapers without departingfrom the spirit of the invention as delined in the annexed claims.

In the drawings similar characters of reference designate correspondingparts in the several views.

In the drawings:

Figure 1 is a fragmentary plan view of my invention showing variousparts in transporting postion.

Figure 2 is a longitudinal section, taken on broken line 2-2 of Fig. ,1,with parts in elevation.

Figure 3 is a side elevation partly in section showing the various partsin discharge position.

Figure 4 is a longitudinal section taken on line 4-4 of Figure l,showing the various parts in loading position.

Figure 5 is a fragmentary side elevation in the discharge positionfacing in opposite direction to Figure 4.

Figure 6 is an enlarged fragmentary plan view partly in section showingthe winding drum on the rear end of the scraper. Figure 6 faces in thedirection of Figure 5.

Figure 7 is an enlarged plan view, partially in section, of the largetransverse beam and associated parts disposed forwardly of the carriers.

Figure 8 is a front elevation, partly in section, of Figure 7. v

Figures 9 and 10 show two views of the latch bar for securing the cableand sheave assembly against movement.

Referring now to the characters of reference on the drawings, therigidly constructed frame is supported from the ground at itsrear end byrolling supports or wheels I0 journaled one on each end of an axle IIsecured to the underside of beam I2. The frame comprises short beams I 3rigid at their rear ends with beam -I 2 and at their front ends withtransversely extendingbeam I4.

Beam I4 is rigidly secured at its ends to side walls I5. Side walls I5project rearwardly above beams I3 and a shaft I6 is rigidly secured atits ends each to a side wall I5 at the upper rear ends thereof. UprightsI'I are rigid at their lower ends with beam I3 and at their upper endswith shaft I8. A pair of forwardly extending members I8 are rigidlysecured each to a side wall I5 and extend from the lower rear corner ofthe side walls to the upper front corners thereof and thence forwardlyto rigid connection each with an end of a hollow transverselyextendingbeam I9. Beam I9 is provided with a pair of forwardly extendingspaced apart members 20. Rollers 2|, see Figure 2, are disposed betweenmembers 20 and suitably journaled on shafts thereon. Disposed betweenmembers 20 and in engagement at its front and rear edges with rollers 2lis an upstanding post 22, see Figure 2. Thus the front end of the frameis disposed for vertical movement on post 22. The lower end of post 22is swivelly supported on a pony truck 23, said pony truck being providedwith a draft beam 24 adapted in a conventional manner at its front endfor connection to a draft device such as a tractor 25.

The front end of the main frame being supported for vertical movement onpost 22, means are provided for imparting said movement as follows:members 20 are provided with a pin 28,

sheaves 21 and 29, thence forwardly from sheaves 29 to and thendownwardly about sheave 30 to and about a direction change sheave 32swivelly mounted in a conventional manneron the front ends of members2U, and thence,forwardly to winding drum 33 to which it is secured, seeFigure 1. Thus operation of drum 33 will actuatecable 3| `so as to raise`and lower the main supporting frame@A y 'e j Disposed between thespaced apartside Walls I5is'` a maincarrier 34. Themainkcarriercomprises' thebottom34- andthe back wall 35jwhich is acontinuation 'of the'bottom 34 in an upwardly and -rearwardly directionto form the back wall wall 35 is aV 35. Secured tothetop edge of backtransverse beam 36e'xtending across the width of themain carrier. vApair of brace bars 31 are rigidly secured one to eachside of the maincarrier and are secured at their upper endsto cross beam 36. The frontends of brace bars 31 are pivotally mounted each to a side wall I5'asindicated at 38, Figures 2, 3, 4 and 5. The front edge of bottom 34 isprovidedl with a scraper 39 which engages the surface to be removed,which material is loaded and dumped from the apparatus. The forwardedges of brace bars 31 are beveled as indicated at 40 to facilitate thepassage of materials into the carrier andthe discharge of materialtherefrom. The main carrier is provided with projections 41 which areadapted to rest on beam I4, see Figure 2, and support the rear` end` ofthe main carrier when the same is in lowered position.

An auxiliary carrier 4| is` associated .with the main carrier andcomprises bottom plates 42, side walls 43 and bent arms 44 all assembledas a rigid structure, the rear ends of arms 44 being pivotally mountedon brackets 45 at 46,'said'brackets 45 being secured to the top edge ofsidewalls I5. Thus the auxiliary carrier 4I is disposed for swingingmovement in a1 vertical plane and adapted to be loadedin common with themain carrier.

`Means arev'provided for controlling the dis-V charge of the maincarrier 34 as follows: Cross beam 36 is provided with brackets 48carrying a pin 49 having sheaves 58 journaled thereon. The large beam I9carries brackets 5| provided With a pin 52 having Jjournaled thereonsheaves 53, see FiguresV 1 and'5. The front end'of the members 20 areprovided with a horizontally projecting trunnion, having journaled.thereon sheave 54, seeFigure 1. Shaft I6 at the rearv end of thescraper,is provided with screw threads 55 which terminate at 56. Mountedfor limited rotation on shaft I6 is a winding drum 51 threaded which isinteriorly grooved at vr58 so as-to receive the threads 55-956 formed`on the shaft, the thread vgrooves 58'in the winding drum terminatingadjacent one end so as to form a stop 58' as illustrated in Figure `6.In Aviewing Figure 5 which'face'sM in the same direction as Figure 6, itwill be seen that winding drum 51 rotates in a clockwise direction forwinding up cable and in counterclockwise direction for `un` windingcable.l Figure 6 shows kthedrum 51'in wound-up position'fwith respectto' the: cableV thereon. Thereforeit will 'be' note'd that'wind" furtherfacilitated by ing drum 51 has limited rotational movement on shaft I6since when the drum has been screwed onto shaft I 6 to the point wherethe end of thread 56 contacts thestop 58 no further unwinding movement,can""take place.; lThe pitch -of the threads on shaftv I6 and 'in thegrooves drum 51 is substantially equivalent to the pitch of the windingof cable on the drum 51. A coil spring 5,9.encircles shaft I6 and issecured at one end to the drum 51v at 60 and at the opposite end to thestationary frame member 6I at 62. Thus thespring 59 will' be compressedand wound up duringthe rotational movement of the drum 51, andy will-impart winding movement to drum 51 when said drumvis free, to turn inclockwise direction- Viewing Figures 1,-2, 3,' 5 andcja,

cable 63 is secured at oney end, to winding drum 511at and after beingwound thereaboutpasses.

forwardly and then back andforth aboutsheaves 50 and 53andthencel'forwardly to and downwardly about sheave 54 and'thencedownwardly 26 and thence 4forwardly to`winding drum 65.

Thus windingdrum 65nmay be operated to wind up cable 463 to dispose themain carrier 34 in the discharge position of Figure 3. 'I'he functionofthe winding drum 51 and associated parts during the dumping operationwill bedescribed after the arrangement of the auxiliary carrier has beendescribed.

The auxiliary carrier 4| outer end with a bracket |56 having sheavemeans 68 journaled thereon. The large cross beam I9 carries brackets|59y through which extends a pin 'l'having journaled thereon a pair ofsheaves 1I. Journaled on a stop pin in the front end of members 20 is asheave 12. A pin 13 extending through cross beam I9, and carries a pin13, see Figure 7, having journaled thereon a plurality of sheaves 14.*Amovable yoke 15 is disposed within the cross pin I9 andis provided witha pin 16 having journaled there' on a plurality of sheaves 11. with astem portion 18 having a stop member 19 rigid therewith.- A latch bar 80straddles the stem 18 and is adapted toengage stop member 19 and securesaid yoke against movement. Latch bar extends upwardly through aretainer r`8| secured to cross beam I9 and is pivotally connected at itsupper end' to an arm 82 which in Lturn is pivotally connected at itsfront end at 83 to the'upper end of brackets 84 secured to cross beam lI9." that the rear end of arm l|32 may be raised see Figure 3 and 5, towithdraw latch bar 80 from engagement with stem 18 and stop 19 to permitfree movement of yoke 15. the lower endof latch bar 85 to facilitatere-'latching action when yoke 15 returns to Anormal is provided at itscarrying a pin 61` Yoke 15 is formed Thus it is s een' It will be notedthat".r 80 is beveled as at- 19. Figures 9 and 10 show two views` oflatchI bar 80.

Secured to one end of the large ycross beam I9 are brackets 86 carryinga pin 81 having Secured to the"v journaled thereon a sheave 88. frontwall of cross beam I9 is a tubular member |19.` Arranged in tubularmember'89 is a coil spring 90. Disposed in one end of coil spring 98 isa plug 9|. Attached to plug 9| at this end is a cable 92 extendingoutwardly through an opening inthe end "oftubularmember 89 then passingabout sheave wand thence through an opening in the end of cross beam I9to a connection with yoke 15. Thus, the movement of yoke 15 towardsheaves 14 will result in compressing spring 90, and when yoke 15 isreleased spring 96 will return same to its normal position at the end ofbeam I9. A cable 93 is anchored at an end to pin 16, see Figures '7 and8, and passes thence back and forth about sheaves 14 and 11, thenceupwardly to sheave 1I, thence back and forth'about sheaves 1l and 68,thence forwardly to and downwardly about sheave 12 thence about adirection change sheave 94, and then forwardly to winding drum 65. Thus,it is seen that winding drum 65 may be operated to wind up cable v93 tocontrol the discharging of the auxiliary carrier 4l.

The operation of the invention will now be described.

Note that cables 63 and 93 are both wound on winding drum 65 to controlthe operation of same successively. The auxiliary carrier is to bedischarged rst, followed by the discharging of the main carrier.

Being in the loaded and transporting position indicated in Figure 2,winding drum 51 is in the position indicated in Figure 6, and movableyoke 15 and related parts are in the position indicated in Figures '1and 8, and to discharge the carriers winding drum 65 is operated to windup cables 63 and 93 simultaneously. Since yoke 15 is latched againstmovement toward sheaves 14 by latch bar 80 the auxiliary carrier willbegin to move upwardly as soon as drum 65 begins to rotate. But this isnot true regarding the main carrier even though cable 93 is also beingwound simultaneously with cable 63, but instead, as the auxiliarycarrier 4I is moved upwardly by cable 63, cable 93 will unwind iirstfrom drum 51 before the main carrier begins to move. This unwinding ofdrum 51 will bring the thread end 56 to the end of the groove 58 andsince the drum can no longer unwind the main carrier will begin to tiltforwardly about pivot 38.

At this point in the operation, the auxiliary carrier 4l will have movedupwardly to the position indicated in Figure 3. In this position of theauxiliary carrier it will be noted that the rear end of arm 82,'seeFigure 3, has been engaged by the auxiliary carrier and raised whichaction frees the yolk 15 and sheaves 11 for movement toward sheaves 14which movement will now take place as the winding drum 65 continues towind up cables 63 and 93, and the main carrier con- .inues to tiltforwardly. When the main carrier s has reached the position indicated inFigure 3 the dumping operation is completed.

From the position indicated in Figure 3 the carriers may be disposed inthe relative positions indicated in Figure 4 by releasing the windingdrum 65 and allowing cables 63 and 93 to unwind simultaneously therefromuntil the carriers have assumed the position of Figure 4 at which pointthe drum 65 may be stopped. The carriers will move from the position ofFigure 3 to that of Figure 4 when the cables 63 and 93 are allowed tounwind from drum 65 because the wound up tension of spring 59 is notsufficient to support the main carrier in the position of Figure 4, andthe expanded position of spring 90, see Figure 7, is suicient to supportthe empty auxiliary carrier in the open position and therefore as cables63 and 93 are released to allow the carriers to assume the positions ofFigure 4 from Figure 3, the auxiliary carrier will not begin to loweruntil sheave block assembly 11 has returned to the position indicated inFigure 7, at which point the latch bar 66 will again drop into. latchlngassociation with stem 18 and stop 19 and the sheave block assembly 11 isagain latched against movement toward sheaves 14. The winding drum 65may then be stopped and the carriers retained in the position ofFigure-4 for loading. The auxiliary carrier 4l may be lowered from theposition of Figure 4 to that of Figure 2 by simply releasing drum 65again and allowing cables 63 and 93 to unwind. As this simultaneousunwinding of cables 63 and 93 takes place the slack that would otherwisebe present in cable 93 is taken up automatically by winding drum 51actuated by spring 59. It will be noted that the auxiliary carrier 4lmay be disposed in any desired position between that of Figure 2 andthe' position of Figure 4 without affecting the position of the maincarrier as indicated in Figures 2 and 4. Two winding drums 65 could beused, one for each of cables 63 and 93 but this would require a pair ofcontrol levers for the operation thereof. One of the principaladvantages of my invention lies in the fact that only one control lever95 is required to control both carriers. The other control lever 96being used to control the raising and lowering of the main frame toposition the scraper 39 relative to the ground through the operation ofwinding drum 33 on cable 3|.

No description is given of the'winch mounted on the tractor for thereason that it is of conventional design, commonly referred to as adouble drum winch. The use of a single drum for simultaneously windingup two cables to control the discharging of two carriers is believed tobe new.

I claim:

1. In a scraper, a main carrier, an auxiliary carrier disposed forwardlyof the main carrier to be loaded in common therewith, said carriersbeing adapted to discharge onto the ground, exible controls for each ofsaid carriers, common actuating means for actuating said exible controlssimultaneously to cause said carriers to operate, and means cooperatingwith said actuating means to cause said carriers to operatesuccessively.

2. In a scraper, a main carrier, an auxiliary carrier disposed forwardlyof the main carrier to be loaded in common therewith, said carriersbeing adapted to discharge onto the ground, a control cable applied toeach of said carriers, a common winding drum for simultaneously windingup said cables so as to cause said carriers to operate and other meanscooperating with said drum to cause said carriers to operatesuccessively.

3. In a scraper, a frame, a main carrier pivoted to said frame, anauxiliary carrier disposed forwardly of said main carrier so as to beloaded in common therewith, said carriers being adapted to dischargeonto the ground, a control cable for each of said carriers to cause thesame to discharge, winding means for winding up both control cables tocause said carriers to operate, and other means cooperating with saidwinding means to cause said carriers to operate successively.

4. In a scraper, a frame, a main carrier disposed with the frame, anauxiliary carrier disposed forwardly of said main carrier to be loadedin common therewith, said carriers being adapted to discharge onto theground, a control cable for each carrier operably associated therewith,take up means for adjusting the slack on one of said cables, a windingdrum for winding up the control cables simultaneouslyto cause thecarriers to operate, and a second means cooperating with "I v"simultaneously, so ,as to' cause Y the"l carriers' to op'-finpredeterminedordenf `materialscraped up by thescraper,lan auxiliarycarrier operably pivoted to saiduframe forwardly "erat'ey and I'means"cooperating with .sai'djwinding'f drum to cause said carriers tooperatesuccessively y auxiliaryl carrier, pivoted to said lframe anddis- 6."In a scraper, a wheelsupportd/frame in'- 'jcludingspaced apart sidefwalls, a. main carrier lhaving a bottom`tiltablydisposed'betweenfsaid sidewalls, a 'scraper disposed -at thefront edgey of the main bottom', said sidewalls and said bottom forminga receptacle adapted to receive `of said main carrier to be floaded incommon therewith, both carriersjbeing adapted to discharge onto theground' at their confronting edges. control means associated with saidcarriers for discharging the same, means fortaking up the slackvon oneof said control means, and .other means cooperating with vsaidcontrolmeans for causing said carriers todischarge successively inpredetermined order.

k'7. In a scraper, a frame including side walls, rolling supports forthe frame, a maincarrier bottom tiltably disposed between the` sidewalls, a scraper disposed at the front edge of the'main bottom, saidside walls and the main bottom forming a receptacle adapted to receivematerial scraped up by the scraper, an auxiliary carrier operablydisposed in front of the main carrier to be loaded in common therewith,said carriers being adapted to discharge onto the ground at theirconfronting edges, a control cable for each of said carriers operablyassociated therewith, a common winding drum for winding up said controlcables, and means cooperating with said drum to cause said carriers tooperate successively.

8. In a scraper, a frame including side walls, rolling supports for theframe, a main carrier having a bottom tiltably disposed between the sidewalls, a scraper disposed at the front end of said main bottom, saidside walls and said bottom forming a primary receptacle adapted toreceive material scraped up by the scraper, a secondary carrier operablydisposed irl front of the main carrier to be loaded in common therewith,both carriers being adapted to discharge onto the ground, a controlcable for each carrier operably associated therewith and a winding drumfor winding up the control cables simultaneously to cause the carriersto operate, and means cooperating with said windingvdrum to cause saidcarriers to operate successively.

y material scraped up by saidmscrapen'a secondary e 9.7In a scraper, 'aframe including side walls "as rigid integral parts thereof, rollingsupports for the frame, a bottomy wall tiltably disposed between theside walls, a scraper disposed at the forward end of the bottom wall forscraping up material, said side walls and said bottom constituting aprimary receptacle adapted to receive winding drum to successively.

arriers ,ftof operate, ting .witlrsaid `windre'rS @energie Siwmaincarrieriiltablydisposedon said frame, an

posed Vforwardlyof the main carriery tol be` loaded .in common`therewith,s`aid carriers beingvadapte'd todischargao'nto the ground attheir-confronting edges, a control cable for each carrier andsimultaneously forA operating said carriers, ,and a second meanscooperating-with said Acommon A cause. said carriersto operate 11. In ascraper, a wheel. supported-frame, a main carrier tiltablyldisposed onthe frame, an auxiliary( carrier pivotedrto said frame forwardly of themainrcarrier lto be loaded in common therewith, said carriers Vbeingadapted to discharge onto the groundat their confronting edges, acontrol cable for each carrier operably associated therewith andresiliently attached at their rear ends to the frame,a winding drum forwinding up the cables simultaneously for operating saidA carriers and asecond operable means cooperating with said winding drum to cause saidcarriers to operate successively.

1.2. In a scraper,I a frame including spaced apart parallel side wallsas rigid integral parts thereof, a main-carrier bottom tiltably disposedbetween the side walls, said main bottom being sidably cooperable at itsends with said parallel side walls, whereby said side walls may serve aso end closures therefor, an auxiliary carrier opersaid carriers operablyassociated therewith, a

winding drum for winding up said cables, and means cooperating with saidwinding drum to cause said carriers to operate successively.

13. In a scraper, a supporting frame including spaced apart parallelside walls as rigid integral parts thereof, transverse beams rigidlyconnecting said side walls, a main carrier bottom open at both sides andpivotally supported on said side walls adjacent its forward end, saidmain bottom being slidably cooperable at its ends with saidkparallelside walls, whereby said side walls may serve as end closures therefor,an auxiliary carrier operably disposed in front of the main carrier tobe loaded in common therewith, both carriers being adapted to dischargeon to the ground at their confronting edges, a control cable for-eachofsaid carriers operably associated therewith, a winding drum forwinding up said cables, and means cooperating with said winding drum tocause said carriers to operate successively. 1

CHARLES LE BLEU.

